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Tue, 9 Jul 2019 07:26:38 +0000 From: To: , , , , CC: , Subject: [PATCH RESEND] watchdog: sama5d4: fix WDD value to be always set to max Thread-Topic: [PATCH RESEND] watchdog: sama5d4: fix WDD value to be always set to max Thread-Index: AQHVNiel3tqC/c4NYUqYBLX/IH2ZHg== Date: Tue, 9 Jul 2019 07:26:38 +0000 Message-ID: <1562656725-21468-1-git-send-email-eugen.hristev@microchip.com> Accept-Language: en-US, ro-RO Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: VI1PR09CA0142.eurprd09.prod.outlook.com (2603:10a6:803:12c::26) To DM5PR11MB1242.namprd11.prod.outlook.com (2603:10b6:3:14::8) x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.7.4 x-originating-ip: [94.177.32.154] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 50cfd7bc-2e63-4aac-fc4d-08d7043ec7dd x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600148)(711020)(4605104)(1401327)(2017052603328)(7193020);SRVR:DM5PR11MB1722; 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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 50cfd7bc-2e63-4aac-fc4d-08d7043ec7dd X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Jul 2019 07:26:38.7855 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3f4057f3-b418-4d4e-ba84-d55b4e897d88 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: eugen.hristev@microchip.com X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR11MB1722 Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org From: Eugen Hristev WDD value must be always set to max (0xFFF) otherwise the hardware block will reset the board on the first ping of the watchdog. Reviewed-by: Guenter Roeck Signed-off-by: Eugen Hristev --- drivers/watchdog/sama5d4_wdt.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/watchdog/sama5d4_wdt.c b/drivers/watchdog/sama5d4_wdt.= c index b8da1bf..5afe10c 100644 --- a/drivers/watchdog/sama5d4_wdt.c +++ b/drivers/watchdog/sama5d4_wdt.c @@ -110,9 +110,7 @@ static int sama5d4_wdt_set_timeout(struct watchdog_devi= ce *wdd, u32 value =3D WDT_SEC2TICKS(timeout); =20 wdt->mr &=3D ~AT91_WDT_WDV; - wdt->mr &=3D ~AT91_WDT_WDD; wdt->mr |=3D AT91_WDT_SET_WDV(value); - wdt->mr |=3D AT91_WDT_SET_WDD(value); =20 /* * WDDIS has to be 0 when updating WDD/WDV. The datasheet states: When @@ -248,7 +246,7 @@ static int sama5d4_wdt_probe(struct platform_device *pd= ev) =20 timeout =3D WDT_SEC2TICKS(wdd->timeout); =20 - wdt->mr |=3D AT91_WDT_SET_WDD(timeout); + wdt->mr |=3D AT91_WDT_SET_WDD(WDT_SEC2TICKS(MAX_WDT_TIMEOUT)); wdt->mr |=3D AT91_WDT_SET_WDV(timeout); =20 ret =3D sama5d4_wdt_init(wdt); --=20 2.7.4